Finding the Fourth Proportional to 15,368,018.54, 21,207,931.71 and 8,398,839.02
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Solution
The fourth proportional to 15,368,018.54, 21,207,931.71 and 8,398,839.02 is: 11,590,433.99
Step by Step Solution
- Step 1: Write the proportion equation
15,368,018.54 : 21,207,931.71 = 8,398,839.02 : x - Step 2: Convert to fraction form
15,368,018.54/21,207,931.71 = 8,398,839.02/x - Step 3: Cross multiply
15,368,018.54x = 21,207,931.71 × 8,398,839.02 - Step 4: Simplify right side
15,368,018.54x = 178,122,004,379,443.31 - Step 5: Solve for x
x = 178,122,004,379,443.31/15,368,018.54 - Step 6: Final answer
x = 11,590,433.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.